Today London officially opens its newest landmark, a 1,016-foot skyscraper that has been under construction since 2009. As you can see above, the irregular pyramid-shaped building is entirely covered in glass, and resembles an icicle or chip of glass – hence the name, The Shard.

At 87 stories, the building is the tallest in the European Union. From the 68th to the 72nd floor, the new skyscraper has a viewing gallery and an open-air observation deck called The View from the Shard. Thanks to the fine folks at Visit London, I was lucky enough to get a sneak peek of the new attraction just a few days before it opened to the public. Although it was a snowy, overcast morning, the panoramic views from the top were impressive. From the 72nd floor, it was easy to let your eye follow the dramatic curves of the Thames River and spot many of London’s famous landmarks. Officials said on clear days, visibility could reach up to 40 miles.

For those who are not familiar with London’s cityscape, The Shard has made things easy. Several telescopic viewfinders not only let you zoom in to various spots around London, but have also been programmed to point out historical and otherwise important places and monuments. As you point the viewfinder in any direction, the names of certain landmarks pop up on a screen. If something is unfamiliar, just tap the name to learn more. It’s a great way to orient yourself and learn more about the city – and even if it ends up being an overcast day, the markers can indicate what isn’t visible beyond the clouds.

Besides the observation galleries, the building will house 600,000 square feet of office space, 10 luxury residences valued at $50 million each, a Shangri-La hotel, and three floors of restaurants and retail space.

The building marks a new phase for an improvement plan in the surrounding area, which will soon be known as the London Bridge Quarter. In addition to The Shard, a shorter building called London Bridge Place will be built nearby, and major updates are underway in the London Bridge rail and Underground station.

Reports from London say Mayor Boris Johnson officially cut the ribbon for The Shard earlier today, and a couple has already gotten engaged at the top. Now that it’s open, the attraction is expected to draw more than two million visitors a year, and comes with an entrance fee of £24.95, or about $39, for adults.